7 Configuration
Installer reference guide
20
RXF50+60B2_RXF71A2_RXP50~71L2_(A)RXM42~71N2_RXJ50N2_
RXA42+50B2
R32 split series
4P513661-6B – 2018.05
6.9
About the compressor
DANGER: RISK OF EXPLOSION
▪ Use a pipe cutter to remove the compressor.
▪ Do NOT use the brazing torch.
▪ Use approved refrigerants and lubricants only.
DANGER: RISK OF BURNING
Do NOT touch the compressor with bare hands.
7
Configuration
7.1
Facility setting
Use this function for cooling at low outdoor temperature. This
function is designed for facilities such as equipment of computer
rooms. NEVER use in a residence or office where people occupy the
space.
Applicable for: RXM-N, ARXM-N, RXJ-N, RXA-B
7.1.1
To set the facility mode
When cutting jumper J6 on the PCB, the operation range will expand
to –15°C. The facility mode will stop if the outdoor temperature drops
below –20°C and resume when the temperature rises again.
To cut jumper J6
1
Remove the top plate of the outdoor unit.
2
Remove the front plate.
3
Remove the drip proof cover.
4
Cut jumper J6 on the outdoor unit PCB.
J6
J4
J9
J5
J7
J8
J12
b
c
d
a
a
Front plate
b
Top plate
c
Drip proof cover
d
Jumpers
INFORMATION
▪ The indoor unit may produce Intermittent noise due to
the outdoor unit fan turning ON and/or OFF.
▪ Do NOT place humidifiers or other items which might
raise humidity in rooms when you use the facility mode.
▪ Cutting jumper J6 sets the indoor unit fan to the highest
speed.
▪ Do NOT use this setting in residences or offices with
people.
7.2
Standby electricity saving function
7.2.1
About the standby electricity saving
function
This mode turns OFF the power supply of the outdoor unit and sets
the indoor unit into the standby saving mode to reduce the power
consumption of the unit.
This mode is only applicable for outdoor units: RXM50+60N and
indoor units: FTXM.
INFORMATION
The standby electricity saving can ONLY be used for the
units described above.
WARNING
Before connecting or disconnecting the connector, make
sure the power supply is turned off.
INFORMATION
Selective connector for standby electricity saving is
required if other than applicable indoor unit is connected.
7.2.2
To turn on standby electricity saving
function
Prerequisite:
The main power supply MUST be turned off.
1
Remove the service cover.
2
Disconnect the selective standby electricity saving connector.
3
Turn on the main power supply.
8
Commissioning
8.1
Overview: Commissioning
This chapter describes what you have to do and know to
commission the system after it is configured.
Typical workflow
Commissioning typically consists of the following stages:
1
Checking the "Checklist before commissioning".
2
Performing a test run for the system.
8.2
Precautions when commissioning
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
CAUTION
Do NOT perform the test operation while working on
the indoor units.
When performing the test operation, NOT only the outdoor
unit, but the connected indoor unit will operate as well.
Working on an indoor unit while performing a test operation
is dangerous.
